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Having discovered rich deposits of iron-ore people began to construct an iron
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And steel works in this district.
III. Перепишите и письменно переведите предложения, содержащие придаточные предложения условия.
Provided the geologists used the necessary instruments, the measurement
Would be correct.
If the operator’s cabin had been equipped with remote control, he would have
Been able to work faster and with greater precision.
IV. Перепишите и письменно переведите текст на русский язык.
KINDS OF TRANSPORTATION
There are three main kinds of transportation: land, water and air. Each has advantages and disadvantages. For example, trucks and trains can operate in storms that may ground airplanes or keep ships in harbors. Weather and geographical conditions may also determine the type of transportation used in a region.
On land the chief forms of transportation are automobiles, railroads, trucks and pipelines.
Automobiles provide the most important means of passenger travel in the USA and Canada. The automobile also is important in land transportation in Western Europe and some other parts of the world.
Railroads haul about half of the freight and pipeline transport a little less than a fifth.
Other means of land transport include buses, streetcars, electric elevated trains, subway trains, motorcycles, etc. Buses serve as a main means of transporting people between cities in many parts of the world and also within larger cities and towns. People in some countries use motorcycles, motor scooters and bicycles as widely as Americans use automobiles.
On water transportation follows chief routes: on lakes, on rivers and across oceans. The USA and Canada are the only countries with the advantage of a system of inland waterways like the Great Lakes. River transportation provides cheap, efficient water transportation for much of the heart of the country. Ocean serves as the main artery of transportation between continents.
Jet airlines enable travelers to eat breakfast in New York City and have dinner in London. Airplanes usually follow the shortest route between two points because they can fly over mountains and water barriers. Helicopters are also important in air transportation.
КОНТРОЛЬНОЕ ЗАДАНИЕ №4.
ВАРИАНТ 3.
I. Перепишите и письменно переведите на русский язык предложения, принимая во внимание, что объектный и субъектный инфинитивные обороты большей частью соответствуют придаточным предложениям.
We know a laser to be a device that stimulates the electrons of a light-
Producing material to vibrate simultaneously giving off a light with
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Tremendous energy.
Lasers are known to have found an application in the printing industry.
Light waves are now believed to be due to the motions of electrons themselves
Within the atoms.
Chemical investigation has shown each element to combine with another only
In definite proportions.
II. Перепишите и письменно переведите на русский язык предложения, учитывая различия в переводе зависимого и независимого причастных оборотов.
The first laser having been built about 30 years ago, scientists developed
Several types of lasers.
Having developed quantum generators called lasers, scientists are looking for
Practical use for a new kind of ray which is millions of times brighter than the
Sun.
Semiconductor lasers are able to transform electric energy directly into light
Wave energy, this property of semiconductor lasers opening up new
Possibilities of producing extremely economical sources of light.
III. Перепишите и письменно переведите предложения, содержащие придаточные предложения условия.
If the Earth had no atmosphere, its heated surface would quickly radiate back
Into space all the energy which reaches it from the Sun.
Had the checking up of the experimental data not taken so much time, we
Should have completed our work long ago.
IV. Перепишите и письменно переведите текст на русский язык.
LASER
The laser has become a multipurpose tool. It has caused a real revolution in technology and in the nature of productive labour.
The laser can cure diseases. It has become indispensable as a means of space communication. Its beam produces a sharp picture on the TV screen. Moreover, it can increase the size of the TV screen to that of a modern cinema. The laser cuts steel, pierces hard alloys and diamonds and drills holes through them a few microns in diameter.
Nevertheless, the laser no doubt has innumerable other applications which we are still to discover.
Let us begin with optical methods of data processing. Technological progress calls for (требовать) ever more efficient electronic computers. Multipurpose computers capable of performing more than ten million operations per second have already been designed and built. Laser devices will apparently make it possible to build extremely fast computer elements capable of doing up to a thousand million operations a second.
Today the enterprises are producing a number of machine tools and automatic devices intended for production lines. The machine tools for working jewel bearings for the watch industry and diamond files for wire drawing are now used on a wide scale. These machine tools bring a substantial economic effect. Machine tools employing carbon dioxide lasers for cutting quartz and glass pipes and for crystal and glass engraving are being introduced into industry. Lasers have found an application in the printing industry.
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КОНТРОЛЬНОЕ ЗАДАНИЕ №4.
ВАРИАНТ 4.
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